Malicious PDF — malware analysis report

Static analysis result for SHA-256 452ff62cae23b418…

MALICIOUS

PDF

39.5 KB Created: 2020-08-16 21:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e4d56863bcca2132922f585586550273 SHA-1: 6bfcd9cf778444a1611398e54dffb045eddd74f4 SHA-256: 452ff62cae23b418be5971f6bf6d50ff2b9cee145eec1cb37a65800b42fec8cc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=acastat+software+free'. This indicates the document is designed to trick users into visiting a malicious site under the guise of a free software download. The presence of a large number of external PDF links, many hosted on Shopify, further supports a link-farming or redirection strategy. No scripts were extracted, but the primary attack vector is the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=acastat+software+free In PDF document text
    • http://files.j-6forge.com/uploads/1/3/1/3/131383954/4327775.pdfIn PDF document text
    • http://najikuvuv.hardfiberglassdidgeridoo.com/uploads/1/3/1/8/131857419/4e6c9.pdfIn PDF document text
    • http://files.tereayersmusic.net/uploads/1/3/1/4/131407423/92c0a5caf8f.pdfIn PDF document text
    • http://kilofo.purplesparklefoundation.org/uploads/1/3/0/9/130969762/togaxotexuz_biwuxuveniz_xisusaru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8187/3048/files/lexunewekaziruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/80169821453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8307/6518/files/kolidizabokarerilabobuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8000/8355/files/8644205912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/aprilaire_thermostat_8476w_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5721/6678/files/rumoxifupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6376/9243/files/catalogo_blue_point.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4437/9546/files/puranesuzegilivezafiner.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC 4924 bytes
SHA-256: bd3cbdc96838967a4a5c2fe7bb93f4f16681476b06f89b1fc9a5caf03c8f925a
font_01_sfnt_off00006e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 10308 bytes
SHA-256: 19ca95a80136f8bde943837097484d86f973531e71276210232df3be0a61b72b

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